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P0430 Diagnostic Trouble Code Discussion for February 2012

Catalyst System Low Efficiency (Bank 2)

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Trouble Ticket Help Requests for DTC P0430
Help Request Posted
2004 Chevrolet Silverado 1500 4.8L MIL Lamp on VIN: 2GCEC19VX4
P0430: Catalyst System Low Efficiency (Bank 2). ... chevy truck, 4.8liter engine that in a years time or 9 thousand miles that throws a p0430 code. It first came in with a p0430 code and a rattling converter. Replaced convertor and all showed good then in 1 year 8 thousand miles it came back with p0430 code...
February 24, 2012